v. 1 intr. (often foll. by down, in, etc.) settle oneself comfortably. 2 intr. press oneself against another in affection etc. 3 tr. (foll. by in, into, etc.) push (a head or shoulder etc.) affectionately or snugly. 4 intr. lie half hidden or embedded.
[ OE nestlian (as NEST) ]